Comment 70 for bug 1025555

Current generation Intel Atom-based tablets use a 64-bit processor a 32-bit UEFI firmware. In order to run Ubuntu (32-bit or 64-bit) on one of these machines, Grub2 MUST be provided in a 32-bit binary.

It is categorically false that one cannot install 32-bit or 64-bit Ubuntu on a machine with a 32-bit UEFI implementation. I'm stting here writing this comment on that exact configuration - an Acer Aspire Switch 10 with a Bay Trail Intel Atom CPU and a 32-bit UEFI firmware. I had to compile Grub2 myself in order to get it working, and I'm still working out wrinkles in it, because manually configuring Grub2 to load an OS is a giant PITA.

At this point, there are a number of popular devices from major OEMs that use a 32-bit UEFI implementation, and contrary to what some devs have insisted in this thread, there is zero technological limitation to providing a 32-bit Grub2 binary with the official Ubuntu release.